Complete the essential fields to see the result.
Effective focal length—Effective focal ratio—Image scale—Field of view—Theoretical resolution (Dawes)— 05 · Check the framingScale representation of the selected object’s size within our frame (FOV).
Field of View (FOV)
Interpretation
Guiding scale compatibility
Good compatibility≤ 3×Worth checking3–5×More demanding> 5×
Indicative only: it does not measure actual guiding quality. How are the scales calculated?
Scale (″/px) = 206.265 × pixel size (µm) ÷ focal length (mm)
Geometric, indicative estimate. Real performance also depends on the atmosphere, focus, tracking, filters and processing.
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